| Answer | Crossword Clue |
|---|---|
| SCUPPERS | Openings at the level of the deck for draining water overboard. |
| waterways | A thick plank or angle iron at the outer edge of the deck of a vessel, which joins the vessel's side to its deck and directs water overboard via the scuppers |
| hypsometers | A device for calibrating thermometers at the boiling point of water at a known height above sea level or for estimating height above sea level by finding the temperature at which water boils |
| hypsometer | A device for calibrating thermometers at the boiling point of water at a known height above sea level or for estimating height above sea level by finding the temperature at which water boils |
